SBOU310 October   2024

 

  1.   1
  2.   Description
  3.   Get Started
  4.   Features
  5.   5
  6. 1Evaluation Module Overview
    1. 1.1 Introduction
    2. 1.2 Kit Contents
    3. 1.3 Specification
    4. 1.4 Device Information
  7. 2Hardware
    1. 2.1 Quick Start Setup
    2. 2.2 EVM Operation
      1. 2.2.1 Current Sensing Operation
        1. 2.2.1.1 Detailed Setup
    3. 2.3 Circuitry
      1. 2.3.1 Current Sensing IC
      2. 2.3.2 Input Signal Path
      3. 2.3.3 Digital Circuitry
    4. 2.4 PAMB Compatibility
  8. 3Software
    1. 3.1 Setup
      1. 3.1.1 Driver Installation
      2. 3.1.2 Firmware
        1. 3.1.2.1 Firmware Debug
      3. 3.1.3 GUI Setup and Connection
        1. 3.1.3.1 Initial Setup
        2. 3.1.3.2 GUI to EVM Connection
    2. 3.2 GUI Operation
      1. 3.2.1 Home Tab
      2. 3.2.2 Configuration Tab
      3. 3.2.3 Registers Tab
      4. 3.2.4 Results Data Tab
    3. 3.3 Direct EVM USB Communication
      1. 3.3.1 Standard USB Read and Write Operations
      2. 3.3.2 Collect Data Through the USB BULK Channel
  9. 4Hardware Design Files
    1. 4.1 Schematics
    2. 4.2 PCB Layout
    3. 4.3 Bill of Materials
  10. 5Additional Information
    1. 5.1 Trademarks
  11. 6Related Documentation From Texas Instruments

3.2.3 Registers Tab

To view and edit the device registers, click the INA231EVM (Registers) icon on the menu to the left. The Registers tab looks like the one shown in Figure 3-9.

INA231EVM GUI Registers Tab Figure 3-9 GUI Registers Tab

From this page, you can read and write device registers on the EVM. Here are some important notes:

  • Use the Selected EVM drop-down menu at the top to choose which device to work with on the Registers page.
    • Note, changing this here also changes the same setting for the Configuration tab.
    • Functionally, this setting sets the default read/write address in the MCU and then reads all register values back to update the Registers page. Note that if data is being collected at a high frequency, then this can cause a minor delay in the data collection. To prevent this, set device settings before you start collecting data.
  • By default, all changes are automatically written to the device. If desired, then change the Immediate Write setting to Deferred Write to only allow writing when ready.
    • The user can modify writable register values from any of these methods:
      • Through the widget settings in the Field View section on the right.
      • Changing the Value directly with either hex or decimal values.
      • Double-clicking on any individual bit.
  • Turning on Auto Read only updates registers in the Registers page, and not the plots in the Results Data section.
    • Leaving Auto Read on while collecting data for plots can interfere with data collection timing.
  • For questions about a register or register bit field, select the INA231EVM icon.
    • For even more questions about registers, check the data sheet.
  • For convenience, register settings can be saved and loaded back later to any device with the same register map. To do this, go to File > Register Data, as shown in Figure 3-10.
    INA231EVM Save and Load Register SettingsFigure 3-10 Save and Load Register Settings
    • Press the Read All Registers button after loading data to update the Registers page with the actual device values in case the loaded registers were not compatible with the connected device.